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Multi-beam beam forming method and device, and electronic device

A beamforming, multi-beam technology, applied in speech analysis, instruments, etc., can solve problems such as inability to reduce environmental noise

Active Publication Date: 2018-11-16
出门问问创新科技有限公司 +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventor found in the study of the beamforming process that by fusing the time domain filter and the calculation of the beamforming drive weights in the frequency domain, the unwanted ambient noise cannot be reduced

Method used

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  • Multi-beam beam forming method and device, and electronic device
  • Multi-beam beam forming method and device, and electronic device
  • Multi-beam beam forming method and device, and electronic device

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Embodiment Construction

[0070] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0071] An embodiment of the present invention provides a multi-beam beamforming method, such as figure 1 As shown, the method includes:

[0072] 101. Calculate the product of the spatial filtering parameters and the original frequency domain signals corresponding to at least two sound source directions to obtain multi-beam beamforming, the spatial filtering parameters vary with the angle of the sound source and the sub-band frequen...

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Abstract

The embodiment of the invention discloses a multi-beam beam forming method and device, and an electronic device, thereby realizing multi-beam beam forming, ensuring high fidelity of the sound of a target space orientation, and effectively suppressing sounds of other space orientations. The multi-beam beam forming method comprises: products of a spatial filtering parameter and original frequency domain signals corresponding to at least two sound source orientations respectively are calculated to obtain multi-beam beam forming, wherein the spatial filtering parameter varies with varying of angles and sub band frequencies of the sound sources and the at least two sound source orientations includes a target source orientation and at least one another sound source orientation; an enhanced voiceof the target sound source orientation is calculated; an energy ratio value is calculated according to the sub band energy corresponding to the target source orientation and the energy sum of all subbands of the at least one another sound source orientation; and a product of the original frequency domain signal of the target source orientation, the enhanced voice corresponding to the target source orientation, and the energy ratio value is calculated and a voice corresponding to the product is outputted.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of sound processing, and in particular, to a multi-beam beamforming method, device, and electronic equipment. Background technique [0002] With the rapid popularization of smart terminal technology, users have higher and higher requirements for the functions and intelligence of smart terminals. How to make smart terminals more intelligent and professional has become one of the current research directions. [0003] For example: basically all smart terminals are equipped with recording functions as standard, and most of the recording functions will use beamforming (Beamforming), which is a signal processing technology for sensor arrays (such as microphone arrays) for directional signals Receive and perform appropriate signal processing on received sound signals. Beamforming allows microphone assemblies to receive acoustic signals in order to selectively process electrical signals, for e...

Claims

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Application Information

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IPC IPC(8): G10L21/0208G10L21/0216G10L21/0232
CPCG10L21/0208G10L21/0216G10L21/0232G10L2021/02166
Inventor 周舒然李志飞
Owner 出门问问创新科技有限公司
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